Heel-end lasting machine



E. QUINN ETAL April 21, 1942.

HEEL-END LASTING MACHINE Fiie d June 10; 1941 Patented Apr. 21, 1942 E NT OFFICE,

HEEL-END LASTING MACHINE Edward Quinn,

Salem,

Saugus, and Everett G. Hathaway, Mass, assignorsto United Shoe Mae chinery Corporation, Flemington, N. J., a corporation of New Jersey Application June 10, 194-1,seria1 No. 397,500 a 4 Claims. (or. 12-44) This invention relates to heel-end lasting. machines andi's herein illustrated as applied to a machine constructed generally as disclosed in United States Letters Patent No. 2,059,241, granted on November 3, '1936, on an application of J. C. Jorgensen. It will be understood, however, that the invention is not limited to machines constructed as therein disclosed, but is more generally applicable to various machines.

An object of the invention is to obtain improved results in the lasting ofthe heel ends of shoes, and more particularly to produce heel seats with their edge lines better defined than heretofore and better adapter to fit heels thereafter applied to the shoes. For the purposes in view, in the construction herein shown, the wipers which wipe the margin of the heel end of the upper inwardly over the insole in a machine of the illustrated type are provided with abutment faces in angular relation to their wiping faces for engaging the upper exteriorly of the shoe bottom adjacent to the edge of the heel seat and for'applying to the upper in that location inwardly directed shaping or molding pressure at the end of the wiping movements of the wipers over the heel seat. The upper is thus shaped or molded in conformity to the angle between the wiping faces and the abutment faces of the wipers with a sharply defined line at the edge of the heel seat.

In a power-operated machine of the illustrated type the advancing and closing movements of the wipers lengthwise and widthwise of the last respectively to wipe the margin of the upper inwardl y over the insole are automatically limited,

so that at the end of the wiping operation they 1 occupy positions determined independently of the shoe and'last; and theabove-mentioned abutmerit faces are curved lengthwise of the edgeof the last bottom to correspond to the desired contour of the edge of-the heel seat when the wipers are thus in their advanced and closed positions.

Accordingly, the contour of the edge line of the heel seat is automatically determined by the wipers through the action-of the abutment faces on the upper, provision being alforded as usual in machines of the illustrated type for adjustment to vary the limit of-the closing movements of the wipers. In order that the wipers may thus be used successfully to determine the contourof the edge line of the heel seat, the construction shown is further such that the pressure of the abutment faces on the upper is limited substantially te -an area of the upper located beyond the last heightwise of the last, so that the contour of the last will not in any way aifect the action of the abutment faces. Preferably also these faces. are extended heightwise of the last beyond the area of their engagement with the upper to avoid any danger of markin the upper.

The above and other features of the invention, including various novel details of construction and combinations of parts, will: now be more particularly described with reference to the accompanying drawing and thereafter pointed out in the claims. i

In the drawing: Fig.1 is a plan view of a portion of a machine of the type illustrated in' the previously men'- tioned Letters Patent, showing the wipers and parts of their operating mechanism;

Fig. 2 is arr inverted plan view of: the wipers,

showing abutment plates applied thereto for purposes of' this invention and showing the wipers in closed positions;

t Fig. 3 is a view of a portion of. the machine partly inside elevation and partly in section, il-

lustrating the relation of a shoe to the wipers at the end of the wiping operation;

Fig. 4 is a View further illustrating the relation of the shoe to the wipers and to the abutment plates thereon, this view being a section the relation of which to the wipers is represented by the line IV-IV of Fig. 2; and

Fig. 5' shows a shoe after its heel end has been lasted by the machine.

As. fully disclosed in the above-mentioned Letters Patent, a machineof the illustrated type is provided} with a pair ofwipers 2 which are advanced bodily lengthwise of a last and are also closed inward widthwise of the last by swinging movements about a common axis extending heightwise of the last to wipe the margin of the heel endof the upper inwardly over an insole on the last, these wipers being fast'onvblocks 4 which partake of their movements and from which tacks are driven'by driversG through holes 8 in the wipers to fasten the overwiped margin of the upper to the insole. The wipers and the blocks 4 are supported on wiper carriers I 0 guided for svi ingiiiglnovelnents laterally of the shoe on a wiper-supportingslide l2 which is moved by a cam (not shown) lengthwise of the shoe to impart the advancing movements to the wipers. The-wiper carriers l0 are operated. to impart the closing movements to the wipers by cam-operated wiper-closing mechanisms including links I 4 connected to the carriers. By means not herein shown, but fullydisclosed in the above-mentioned Letters Patent, these wiper-closin mechanisms may be adjusted to vary the initial positions of the wipers and thereby to vary the positions which they occupy at the end of their closing movements for shoes of different sizes. It will be understood that a machine of the illustrated type is an automatic power-operated machine and that in operating on a shoe the wipers are advanced and closed to positions predetermined independently of the shoe and last. Associated with the wipers is a flexible heel band l6 which embraces and conforms the heel-end portion of the upper to the contour of the last. The last and shoe are supported on a jack l8 including a post 20 which by swinging movement carries the shoe into engagement with the heel band and by upward movement carries the heel end of the insole into engagement with a holddown 22. In the power operation of the machine the jack is operated to force the shoe thus firmly against the heel band and the holddown and the heel band is closed about the heel end of the shoe, after which the wipers are advanced and closed to wipe the margin of the upper inwardly over the in ole, as fully disclosed in the above-mentioned Letters Patent.

For purposes of this invention there are fastened by screws 24 to the lower faces of the wipers abutment plates 26 provided with abutment faces 28 arranged to extend heightwise of the last in angular relation to the wiping faces of the wipers to apply to the upper adjacent to the edge of the heel seat inwardly directed shaping or molding pressure at the end of the wiping movements of the wipers over the heel seat, the heel band It being of less height than heretofore to provide room for the abutment plates. By the cooperative action of the wiping faces of the wipers and the abutment faces the upper is thus shaped or molded with a sharply defined line at the edge of the heel seat, as illustrated in Fig. 4 and further in Fig. 5. The abutment faces 28 are curved lengthwise of the edge of the last bottom to correspond to the desired contour of the ed e of the heel seat when the wipers are in their advanced and closed positions. In order that no limitation may be imposed by the contour of the last upon the use of the wipers and their abutment plates thus to determine the contour of the edge line of the heel seat, the abutment plates are so formed as to apply to the upper pressure limited substantially to an area of the upper located above the edge of the bottom of the inverted last. To prevent, moreover, any danger of marking the upper the abutment faces are so flared or inclined in downward and outward directions as to extend heightwise of the last beyond the area of their engagement with the upper, as illustrated in Fig. 4. Since in machines of the illustrated type there is a V-shaped opening 30 (Fig. 2) between the wipers at the extreme end of the heel seat when they are in their advanced and closed positions, the two plates 26 are provided respectively with fingers 32 and 34 arranged to bridge this opening, the finger 32 being arranged to engage the upper at the edge of the heel seat and the finger 34 to engage it slightly below the edge, so that the two fingers may overlap each other when the wipers are in their open positions. While either finger, accordingly, does not engage the upper over as great an area heightwise of the last as the main portions of the plates 26, this makes no material difference in the character of the results obtained, especially in view of the fact that the portion of the upper engaged by the fingers is of such comparatively small extent lengthwise of the edge of the heel seat. It will be understood that by use of the adjusting means hereinabove referred to the wipers with the abutment plates thereon will be adjusted widthwise of the shoe in accordance with the size and style of the shoe, and that in order to operate on shoes differing substantially in size or style different wipers with appropriately shaped abutment plates theron will be used in the machine.

Preferably, as herein shown, the wipers are beveled to provide wiping faces which are omewhat inclined heightwise of the last similarly to the marginal slope of the usual convex bottom face of the heel end of the last. This increases the effectiveness of the wipers in shaping or molding the upper near the edge of the heel seat and also contributes to the production of a convex heel seat well adapted to receive a heel having a concave upper-engaging face.

Having described the invention, what we claim as new and desire to secure by Letters Patent of the United States is:

1. In a heel-end lasting machine, wipers for wiping the margin of an upper inwardly over an insole on a last around the heel end of the last, said wipers being movable lengthwise and widthwise of the last to positions predetermined independently of the shoe and last in thus operating on the upper and having in angular relation to their wiping faces abutment faces curved lengthwise of the edge of the last bottom to correspond to the desired contour of the edge of the heel seat when the wipers are in said predetermined positions, said abutment faces being arranged to apply to the upper adjacent to the edge of the heel seat inwardly directed shaping pressure limited substantially to an area of the upper located beyond the last heightwise of the last.

2. In a heel-end lasting machine, wipers for wiping the margin of an upper inwardly over an insole on a last around the heel end of the last, said wipers being movable lengthwise and widthwise of the last to positions predetermined independently of the shoe and last in thus operating on the upper and having in fixed relation thereto abutment faces inclined heightwise of the last relatively to their wiping faces and curved lengthwise of the edge of the last bottom to correspond to the desired contour of the edge of the heel seat when the wipers are in said predetermined positions, said abutment faces being arranged to apply to the upper exteriorly of the heel seat inwardly directed shaping pressure limited substantially to an area of the upper located beyond the last heightwise of the last.

3. In a heel-end lasting machine, wipers for wiping the margin of an upper inwardly over an insole on a last around the heel end of the last, said wipers being movable lengthwise and widthwise of the last to positions predetermined independently of the shoe and last in thus operating on the upper and having in fixed relation thereto abutment faces curved lengthwise of the edge of the last bottom to correspond to the desired contour of the edge of the heel seat when the wipers are in said predetermined positions and arranged to apply to the upper adjacent to the edge of the heel seat inwardly directed shaping pressure to assist in defining the edge line of the heel seat, said abutment faces being limited substantially to engagement with a portion of the upper located beyond the last heightwise of the last but extending heightwise of the last beyond the area of their engagement with the upper.

4. In a heel-end lasting machine, wipers for V wiping the margin of an upper inwardly overan insole on a last around the heel end of the last, saidwipers being movable inwardly lengthwise and widthwise of the last to positions predetermined independently of the shoe and last in thus operating on the upper, the wipers being beveled to provide wiping faces inclined heightwise of the last transversely of the edge of the last bottom and having in angular relation to their wip- 10 ing faces abutment faces curved lengthwise of the edge of the last bottom and arranged to apply to the upper when the wipers are at the limits of their inward movements inwardly directed shaping pressure limited substantially to an area of the upper, located beyond the last heightwise of the last.

EDWARD QUINN. EVERETT G. HATHAWAY. 

